Explosive cartridge



Apr. 3, 1923.

S. DECKER ExPLqsIvB CARTRIDGE Filed Dec. 21, 1922 INVENTOH S/zzuya 0ec/er. Bf

Aha/Mrs WITNESSES ducin'g the cartridge into the hole in the- Patented Apr. 3, 1923.

in STATES SHARP DECKER, OF COMMODORE, PENNSYLVANIA ExPLosIvE CARTRIDGE.

Application filed December 21, 1922. Serial No. 608,2 77- To all wlziam it may concern:

Be it known that I, SHARP DECKER, a citizen of the United States, and a resident "of Commodore, 'in the county of Indiana and State of Pennsylvania, have invented certain new and useful Improvements in Explosive Cartridges, of which the following is a specification.

This invention relates to explosive cartridges especially adapted for use in mines.

In the mines of Pennsylvania and other places the miners roll a sheet of stout paper about a pick handle and the powder is then poured into the tube thus formed.

The ends are sealed preparatory to introcoal formation and the practice of assembling the cartridges in the mine is extremely dangerous.

Therefore, an important object of this may be conveniently carried into the mine on ones person and positively maintained in a dry state so as to insure its subsequent explosion. p

A further object of the invention is to provide a cartridge of the character specified having simple means whereby the same may be fired either by a fuse or by a needle which is engaged with oneend of the'cartridge so as to puncture the same and in carrying out the invention the ends of the.

tubular body are filled with corn-cob plugs which, as known, have central weakened portions capable of being readily removed,

so that only a slight force is necessary topuncture the cartrldge.

A further object is to provide a cartridgeof the character specified which is of highly simplified construction, durable in use and cheap to manufacture. Other objects and advantages will be apparentduring the course of the following description.

In the accompanying drawing, forming a part of this application, and in which like numerals are employed to designate like parts throughout the same,

Fig. 1 is a perspective of the improved cartridge, v

Fig. 2 is a vertical sectional view through the same,

Fig. 3 is a cup perspective of the cartridge, the b0 y being shown broken away.

Fi re 4 is a plane view of a blank from whic the tubular body is-formed.

In the drawing, wherein for the purpose ment of the invention, the numeral 5 desi nates a tubular body formed from a single length of stout paper or cardboard, the ends of which are tapered to a point so that the intermediate portion of the tubular body has a greater number of layers than the end portions of the body. This maintains the tubular body in a rigid state.

In carrying out the invention, the exposed end of the cardboard from which the tubular body is formed, is preferably glued in position and the ends of the tubular body are provided with cylindrical plugs 6 Which may also be glued in position. Of course one of the plugs is glued in position before the cartridge is 'filled and after the cartridge is filled, the other plug is secured .within the tubular body as illustrated in invention .is to provide a cartridge whlch F igure 2.

When the cartridge has been filled and the plugs inserted as illustrated in Fig. 2, a

may be displaced by a needle and tamping' bar after the cartridge has been inserted into the hole. This permits the cartridge to be effectively exploded by a squib.

The cartridge may also be provided with a fuse 20 which may be introduced into one end of the tubular body through a diagonal hole 22. In this case a wrapping of tire tape 24 may be employed to secure the fuse to the body. Of course the fuse is not connected to the tubular body until it is desired to use the cartridge.

With reference to the foregoing description, taken in connection with the accompanying drawing, it will be seen that an explosive cartridge constructed in accordance with this invention will be maintained in a dry state and may be set off either by means of the fuse 20 or by a needle which is forced through the central weakened portion 16. A suitable number of cartridges may be carried on ones person for ready use and this overcomes the necessity of forming the tubular bodies in the mine as is now done in,

many cases.

In carrying out the invention the cartridge can be made any length desired and powder only is used in the same.

I claim 1. A cartridge comprising a tubular body having a reinforced intermediate portlon, the tubular body being formed from an elongated blank having tapering ends which constitute the reinforcement at the intermediate portion of the body, an explosive filling within the tubular body, plugs glued in the ends of the body and consistlng of sections of corn cobs having weakened central portions capable of being readily displaced, a coating of paraifine extending about the tubular body and the plugs for excluding moisture.

2. A cartridge comprising a tubular body having a reinforced intermediate portion,

the tubular body being formed from an elon- .portions capable of being readily displaced,

a coating of parafline extending about the tubular body and the plugs for excluding moisture, and a fuse extending into the explosive filling.

SHARP DECKER. 

